Reason obeys itself; and ignorance submits to whatever is dictated to it.

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there is no shame in not knowing. The problem arises when irrational thought and attendant behavior fill the vacuum left by ignorance. ― Neil deGrasse Tyson

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If we are to have another contest in the near future of our national existence, I predict that the dividing line will not be Mason and Dixon's but between patriotism and intelligence on the one side, and superstition, ambition and ignorance on the other.

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If someone can prove me wrong and show me my mistake in any thought or action, I shall gladly change. I seek the truth, which never harmed anyone: the harm is to persist in one's own self-deception and ignorance.

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Today I see more clearly than yesterday that the back of the problem of race and color lies a greater problem which both obscures and implements it: and that is the fact that so many civilized persons are willing to live in comfort even if the price of this is poverty, ignorance, and disease of the majority of their fellow men.

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Ignorance is a cure for nothing.

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A man is responsible for his ignorance.

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Condemnation before investigation is the highest form of ignorance.

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There is nothing worse than aggressive stupidity. ― Johann Wolfgang von Goethe

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Anyone who has the power to make you believe absurdities has the power to make you commit injustices. - Voltaire

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